I uploaded a new alpha, which will hopefully eventually become v4.3 if anyone can please test, it will print in chat whatever it will hide when it goes live, please report false positives here.
It basically makes the ASCII art filter a little more aggressive, but in turn disables it on non-latin based clients (RU, CN, KR, etc) due to WoW Lua restrictions. I'm expecting some issues, I think it might break for anyone using an English client on a Russian server. I'm not sure if there's an easy way to check what locale the server you play on is.
Trying to wrap my head around how some of these are possible.
To shine some more light on it, the ASCII filter is basically a detection of 6 symbols in a row. Now I see how some lines have 6 dots, but something like "[Leatherworking] All ICC and TOC patterns available" doesn't make much sense.